projects / occt.git / blame_incremental
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (non-incremental) | history | HEAD
0025376: Inconsistence between function and derivatives evaluation in Extrema_GlobOpt...
[occt.git] / src / OpenGl / OpenGl_Workspace.cxx
... / ...
CommitLineData
1// Created on: 2011-09-20
2// Created by: Sergey ZERCHANINOV
3// Copyright (c) 2011-2014 OPEN CASCADE SAS
4//
5// This file is part of Open CASCADE Technology software library.
6//
7// This library is free software; you can redistribute it and/or modify it under
8// the terms of the GNU Lesser General Public License version 2.1 as published
9// by the Free Software Foundation, with special exception defined in the file
10// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
11// distribution for complete text of the license and disclaimer of any warranty.
12//
13// Alternatively, this file may be used under the terms of Open CASCADE
14// commercial license or contractual agreement.
15
16#include <OpenGl_GlCore15.hxx>
17
18#include <InterfaceGraphic.hxx>
19
20#include <OpenGl_AspectLine.hxx>
21#include <OpenGl_AspectFace.hxx>
22#include <OpenGl_AspectMarker.hxx>
23#include <OpenGl_AspectText.hxx>
24#include <OpenGl_Context.hxx>
25#include <OpenGl_Element.hxx>
26#include <OpenGl_FrameBuffer.hxx>
27#include <OpenGl_Structure.hxx>
28#include <OpenGl_Texture.hxx>
29#include <OpenGl_View.hxx>
30#include <OpenGl_Workspace.hxx>
31
32#include <Graphic3d_TextureParams.hxx>
33
34#if defined(_WIN32) && defined(HAVE_VIDEOCAPTURE)
35 #include <OpenGl_AVIWriter.hxx>
36#endif
37
38IMPLEMENT_STANDARD_HANDLE(OpenGl_Workspace,OpenGl_Window)
39IMPLEMENT_STANDARD_RTTIEXT(OpenGl_Workspace,OpenGl_Window)
40
41namespace
42{
43 static const TEL_COLOUR THE_WHITE_COLOR = { { 1.0f, 1.0f, 1.0f, 1.0f } };
44 static const OpenGl_Vec4 THE_BLACK_COLOR (0.0f, 0.0f, 0.0f, 1.0f);
45
46 static const OpenGl_AspectLine myDefaultAspectLine;
47 static const OpenGl_AspectFace myDefaultAspectFace;
48 static const OpenGl_AspectMarker myDefaultAspectMarker;
49 static const OpenGl_AspectText myDefaultAspectText;
50
51 static const OpenGl_TextParam myDefaultTextParam =
52 {
53 16, Graphic3d_HTA_LEFT, Graphic3d_VTA_BOTTOM
54 };
55
56 static const OpenGl_Matrix myDefaultMatrix =
57 {
58 {{ 1.0F, 0.0F, 0.0F, 0.0F },
59 { 0.0F, 1.0F, 0.0F, 0.0F },
60 { 0.0F, 0.0F, 1.0F, 0.0F },
61 { 0.0F, 0.0F, 0.0F, 1.0F }}
62 };
63
64};
65
66// =======================================================================
67// function : Init
68// purpose :
69// =======================================================================
70void OpenGl_Material::Init (const OPENGL_SURF_PROP& theProp)
71{
72 // ambient component
73 if (theProp.color_mask & OPENGL_AMBIENT_MASK)
74 {
75 const float* aSrcAmb = theProp.isphysic ? theProp.ambcol.rgb : theProp.matcol.rgb;
76 Ambient = OpenGl_Vec4 (aSrcAmb[0] * theProp.amb,
77 aSrcAmb[1] * theProp.amb,
78 aSrcAmb[2] * theProp.amb,
79 1.0f);
80 }
81 else
82 {
83 Ambient = THE_BLACK_COLOR;
84 }
85
86 // diffusion component
87 if (theProp.color_mask & OPENGL_DIFFUSE_MASK)
88 {
89 const float* aSrcDif = theProp.isphysic ? theProp.difcol.rgb : theProp.matcol.rgb;
90 Diffuse = OpenGl_Vec4 (aSrcDif[0] * theProp.diff,
91 aSrcDif[1] * theProp.diff,
92 aSrcDif[2] * theProp.diff,
93 1.0f);
94 }
95 else
96 {
97 Diffuse = THE_BLACK_COLOR;
98 }
99
100 // specular component
101 if (theProp.color_mask & OPENGL_SPECULAR_MASK)
102 {
103 const float* aSrcSpe = theProp.isphysic ? theProp.speccol.rgb : THE_WHITE_COLOR.rgb;
104 Specular = OpenGl_Vec4 (aSrcSpe[0] * theProp.spec,
105 aSrcSpe[1] * theProp.spec,
106 aSrcSpe[2] * theProp.spec,
107 1.0f);
108 }
109 else
110 {
111 Specular = THE_BLACK_COLOR;
112 }
113
114 // emission component
115 if (theProp.color_mask & OPENGL_EMISSIVE_MASK)
116 {
117 const float* aSrcEms = theProp.isphysic ? theProp.emscol.rgb : theProp.matcol.rgb;
118 Emission = OpenGl_Vec4 (aSrcEms[0] * theProp.emsv,
119 aSrcEms[1] * theProp.emsv,
120 aSrcEms[2] * theProp.emsv,
121 1.0f);
122 }
123 else
124 {
125 Emission = THE_BLACK_COLOR;
126 }
127
128 ChangeShine() = theProp.shine;
129 ChangeTransparency() = theProp.trans;
130}
131
132// =======================================================================
133// function : OpenGl_Workspace
134// purpose :
135// =======================================================================
136OpenGl_Workspace::OpenGl_Workspace (const Handle(OpenGl_GraphicDriver)& theDriver,
137 const CALL_DEF_WINDOW& theCWindow,
138 Aspect_RenderingContext theGContext,
139 const Handle(OpenGl_Caps)& theCaps,
140 const Handle(OpenGl_Context)& theShareCtx)
141: OpenGl_Window (theDriver, theCWindow, theGContext, theCaps, theShareCtx),
142 NamedStatus (0),
143 HighlightColor (&THE_WHITE_COLOR),
144 //
145 myComputeInitStatus (OpenGl_RT_NONE),
146 myIsRaytraceDataValid (Standard_False),
147 myViewModificationStatus (0),
148 myLayersModificationStatus (0),
149 //
150 myRaytraceFilter (new OpenGl_RaytraceFilter()),
151 myToRedrawGL (Standard_True),
152 myAntiAliasingMode (3),
153 myTransientDrawToFront (Standard_True),
154 myBackBufferRestored (Standard_False),
155 myIsImmediateDrawn (Standard_False),
156 myUseTransparency (Standard_False),
157 myUseZBuffer (Standard_False),
158 myUseDepthTest (Standard_True),
159 myUseGLLight (Standard_True),
160 myIsCullingEnabled (Standard_False),
161 myFrameCounter (0),
162 //
163 AspectLine_set (&myDefaultAspectLine),
164 AspectLine_applied (NULL),
165 AspectFace_set (&myDefaultAspectFace),
166 AspectFace_applied (NULL),
167 AspectMarker_set (&myDefaultAspectMarker),
168 AspectMarker_applied (NULL),
169 AspectText_set (&myDefaultAspectText),
170 AspectText_applied (NULL),
171 TextParam_set (&myDefaultTextParam),
172 TextParam_applied (NULL),
173 ViewMatrix_applied (&myDefaultMatrix),
174 StructureMatrix_applied (&myDefaultMatrix),
175 myCullingMode (TelCullUndefined),
176 myModelViewMatrix (myDefaultMatrix),
177 PolygonOffset_applied (THE_DEFAULT_POFFSET)
178{
179 myGlContext->core11fwd->glPixelStorei (GL_UNPACK_ALIGNMENT, 1);
180
181 if (!myGlContext->GetResource ("OpenGl_LineAttributes", myLineAttribs))
182 {
183 // share and register for release once the resource is no longer used
184 myLineAttribs = new OpenGl_LineAttributes();
185 myGlContext->ShareResource ("OpenGl_LineAttributes", myLineAttribs);
186 myLineAttribs->Init (myGlContext);
187 }
188
189 // General initialization of the context
190
191#if !defined(GL_ES_VERSION_2_0)
192 // Eviter d'avoir les faces mal orientees en noir.
193 // Pourrait etre utiliser pour detecter les problemes d'orientation
194 glLightModeli ((GLenum )GL_LIGHT_MODEL_TWO_SIDE, GL_TRUE);
195
196 // Optimisation pour le Fog et l'antialiasing
197 glHint (GL_FOG_HINT, GL_FASTEST);
198 glHint (GL_POINT_SMOOTH_HINT, GL_FASTEST);
199 glHint (GL_LINE_SMOOTH_HINT, GL_FASTEST);
200 glHint (GL_POLYGON_SMOOTH_HINT, GL_FASTEST);
201#endif
202
203 // AA mode
204 const char* anAaEnv = ::getenv ("CALL_OPENGL_ANTIALIASING_MODE");
205 if (anAaEnv != NULL)
206 {
207 int v;
208 if (sscanf (anAaEnv, "%d", &v) > 0) myAntiAliasingMode = v;
209 }
210}
211
212// =======================================================================
213// function : SetImmediateModeDrawToFront
214// purpose :
215// =======================================================================
216Standard_Boolean OpenGl_Workspace::SetImmediateModeDrawToFront (const Standard_Boolean theDrawToFrontBuffer)
217{
218 const Standard_Boolean aPrevMode = myTransientDrawToFront;
219 myTransientDrawToFront = theDrawToFrontBuffer;
220 return aPrevMode;
221}
222
223// =======================================================================
224// function : ~OpenGl_Workspace
225// purpose :
226// =======================================================================
227OpenGl_Workspace::~OpenGl_Workspace()
228{
229 if (!myLineAttribs.IsNull())
230 {
231 myLineAttribs.Nullify();
232 myGlContext->ReleaseResource ("OpenGl_LineAttributes", Standard_True);
233 }
234
235 ReleaseRaytraceResources();
236}
237
238// =======================================================================
239// function : Activate
240// purpose :
241// =======================================================================
242Standard_Boolean OpenGl_Workspace::Activate()
243{
244 if (!OpenGl_Window::Activate())
245 return Standard_False;
246
247 ViewMatrix_applied = &myDefaultMatrix;
248 StructureMatrix_applied = &myDefaultMatrix;
249
250 ResetAppliedAspect();
251
252 return Standard_True;
253}
254
255// =======================================================================
256// function : UseTransparency
257// purpose : call_togl_transparency
258// =======================================================================
259void OpenGl_Workspace::UseTransparency (const Standard_Boolean theFlag)
260{
261 myUseTransparency = theFlag;
262}
263
264//=======================================================================
265//function : ResetAppliedAspect
266//purpose : Sets default values of GL parameters in accordance with default aspects
267//=======================================================================
268void OpenGl_Workspace::ResetAppliedAspect()
269{
270 NamedStatus = !myTextureBound.IsNull() ? OPENGL_NS_TEXTURE : 0;
271 HighlightColor = &THE_WHITE_COLOR;
272 AspectLine_set = &myDefaultAspectLine;
273 AspectLine_applied = NULL;
274 AspectFace_set = &myDefaultAspectFace;
275 AspectFace_applied = NULL;
276 AspectMarker_set = &myDefaultAspectMarker;
277 AspectMarker_applied = NULL;
278 AspectText_set = &myDefaultAspectText;
279 AspectText_applied = NULL;
280 TextParam_set = &myDefaultTextParam;
281 TextParam_applied = NULL;
282 PolygonOffset_applied = THE_DEFAULT_POFFSET;
283 myCullingMode = TelCullUndefined;
284
285 AspectLine(Standard_True);
286 AspectFace(Standard_True);
287 AspectMarker(Standard_True);
288 AspectText(Standard_True);
289}
290
291// =======================================================================
292// function : DisableTexture
293// purpose :
294// =======================================================================
295Handle(OpenGl_Texture) OpenGl_Workspace::DisableTexture()
296{
297 if (myTextureBound.IsNull())
298 {
299 return myTextureBound;
300 }
301
302#if !defined(GL_ES_VERSION_2_0)
303 // reset texture matrix because some code may expect it is identity
304 GLint aMatrixMode = GL_TEXTURE;
305 glGetIntegerv (GL_MATRIX_MODE, &aMatrixMode);
306 glMatrixMode (GL_TEXTURE);
307 glLoadIdentity();
308 glMatrixMode (aMatrixMode);
309#endif
310
311 myTextureBound->Unbind (myGlContext);
312 switch (myTextureBound->GetTarget())
313 {
314 #if !defined(GL_ES_VERSION_2_0)
315 case GL_TEXTURE_1D:
316 {
317
318 if (myTextureBound->GetParams()->GenMode() != GL_NONE)
319 {
320 glDisable (GL_TEXTURE_GEN_S);
321 }
322 glDisable (GL_TEXTURE_1D);
323 break;
324 }
325 #endif
326 case GL_TEXTURE_2D:
327 {
328 #if !defined(GL_ES_VERSION_2_0)
329 if (myTextureBound->GetParams()->GenMode() != GL_NONE)
330 {
331 glDisable (GL_TEXTURE_GEN_S);
332 glDisable (GL_TEXTURE_GEN_T);
333 if (myTextureBound->GetParams()->GenMode() == Graphic3d_TOTM_SPRITE)
334 {
335 glDisable (GL_POINT_SPRITE);
336 }
337 }
338 #endif
339 glDisable (GL_TEXTURE_2D);
340 break;
341 }
342 default: break;
343 }
344
345 Handle(OpenGl_Texture) aPrevTexture = myTextureBound;
346 myTextureBound.Nullify();
347 return aPrevTexture;
348}
349
350// =======================================================================
351// function : setTextureParams
352// purpose :
353// =======================================================================
354void OpenGl_Workspace::setTextureParams (Handle(OpenGl_Texture)& theTexture,
355 const Handle(Graphic3d_TextureParams)& theParams)
356{
357 const Handle(Graphic3d_TextureParams)& aParams = theParams.IsNull() ? theTexture->GetParams() : theParams;
358 if (aParams.IsNull())
359 {
360 return;
361 }
362
363#if !defined(GL_ES_VERSION_2_0)
364 GLint aMatrixMode = GL_TEXTURE;
365 glGetIntegerv (GL_MATRIX_MODE, &aMatrixMode);
366
367 // setup texture matrix
368 glMatrixMode (GL_TEXTURE);
369 glLoadIdentity();
370 const Graphic3d_Vec2& aScale = aParams->Scale();
371 const Graphic3d_Vec2& aTrans = aParams->Translation();
372 glScalef ( aScale.x(), aScale.y(), 1.0f);
373 glTranslatef (-aTrans.x(), -aTrans.y(), 0.0f);
374 glRotatef (-aParams->Rotation(), 0.0f, 0.0f, 1.0f);
375
376 // setup generation of texture coordinates
377 switch (aParams->GenMode())
378 {
379 case Graphic3d_TOTM_OBJECT:
380 {
381 glTexGeni (GL_S, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR);
382 glTexGenfv (GL_S, GL_OBJECT_PLANE, aParams->GenPlaneS().GetData());
383 if (theTexture->GetTarget() != GL_TEXTURE_1D)
384 {
385 glTexGeni (GL_T, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR);
386 glTexGenfv (GL_T, GL_OBJECT_PLANE, aParams->GenPlaneT().GetData());
387 }
388 break;
389 }
390 case Graphic3d_TOTM_SPHERE:
391 {
392 glTexGeni (GL_S, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
393 if (theTexture->GetTarget() != GL_TEXTURE_1D)
394 {
395 glTexGeni (GL_T, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
396 }
397 break;
398 }
399 case Graphic3d_TOTM_EYE:
400 {
401 glMatrixMode (GL_MODELVIEW);
402 glPushMatrix();
403 glLoadIdentity();
404
405 glTexGeni (GL_S, GL_TEXTURE_GEN_MODE, GL_EYE_LINEAR);
406 glTexGenfv (GL_S, GL_EYE_PLANE, aParams->GenPlaneS().GetData());
407
408 if (theTexture->GetTarget() != GL_TEXTURE_1D)
409 {
410 glTexGeni (GL_T, GL_TEXTURE_GEN_MODE, GL_EYE_LINEAR);
411 glTexGenfv (GL_T, GL_EYE_PLANE, aParams->GenPlaneT().GetData());
412 }
413 glPopMatrix();
414 break;
415 }
416 case Graphic3d_TOTM_SPRITE:
417 {
418 if (GetGlContext()->core20 != NULL)
419 {
420 glEnable (GL_POINT_SPRITE);
421 glTexEnvi (GL_POINT_SPRITE, GL_COORD_REPLACE, GL_TRUE);
422 glTexEnvi (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
423 GetGlContext()->core15->glPointParameteri (GL_POINT_SPRITE_COORD_ORIGIN, GL_LOWER_LEFT);
424 }
425 break;
426 }
427 case Graphic3d_TOTM_MANUAL:
428 default: break;
429 }
430
431 // setup lighting
432 if (aParams->GenMode() != Graphic3d_TOTM_SPRITE)
433 {
434 glTexEnvi (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, aParams->IsModulate() ? GL_MODULATE : GL_DECAL);
435 }
436#endif
437
438 // setup texture filtering and wrapping
439 //if (theTexture->GetParams() != theParams)
440 const GLenum aFilter = (aParams->Filter() == Graphic3d_TOTF_NEAREST) ? GL_NEAREST : GL_LINEAR;
441 const GLenum aWrapMode = aParams->IsRepeat() ? GL_REPEAT : myGlContext->TextureWrapClamp();
442 switch (theTexture->GetTarget())
443 {
444 #if !defined(GL_ES_VERSION_2_0)
445 case GL_TEXTURE_1D:
446 {
447 glTexParameteri (GL_TEXTURE_1D, GL_TEXTURE_MAG_FILTER, aFilter);
448 glTexParameteri (GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, aFilter);
449 glTexParameteri (GL_TEXTURE_1D, GL_TEXTURE_WRAP_S, aWrapMode);
450 break;
451 }
452 #endif
453 case GL_TEXTURE_2D:
454 {
455 GLenum aFilterMin = aFilter;
456 if (theTexture->HasMipmaps())
457 {
458 aFilterMin = GL_NEAREST_MIPMAP_NEAREST;
459 if (aParams->Filter() == Graphic3d_TOTF_BILINEAR)
460 {
461 aFilterMin = GL_LINEAR_MIPMAP_NEAREST;
462 }
463 else if (aParams->Filter() == Graphic3d_TOTF_TRILINEAR)
464 {
465 aFilterMin = GL_LINEAR_MIPMAP_LINEAR;
466 }
467
468 if (myGlContext->extAnis)
469 {
470 // setup degree of anisotropy filter
471 const GLint aMaxDegree = myGlContext->MaxDegreeOfAnisotropy();
472 switch (aParams->AnisoFilter())
473 {
474 case Graphic3d_LOTA_QUALITY:
475 {
476 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT, aMaxDegree);
477 break;
478 }
479 case Graphic3d_LOTA_MIDDLE:
480 {
481
482 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT, (aMaxDegree <= 4) ? 2 : (aMaxDegree / 2));
483 break;
484 }
485 case Graphic3d_LOTA_FAST:
486 {
487 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT, 2);
488 break;
489 }
490 case Graphic3d_LOTA_OFF:
491 default:
492 {
493 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT, 1);
494 break;
495 }
496 }
497 }
498 }
499 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, aFilterMin);
500 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, aFilter);
501 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, aWrapMode);
502 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, aWrapMode);
503 break;
504 }
505 default: break;
506 }
507
508 switch (theTexture->GetTarget())
509 {
510 #if !defined(GL_ES_VERSION_2_0)
511 case GL_TEXTURE_1D:
512 {
513 if (aParams->GenMode() != Graphic3d_TOTM_MANUAL)
514 {
515 glEnable (GL_TEXTURE_GEN_S);
516 }
517 glEnable (GL_TEXTURE_1D);
518 break;
519 }
520 #endif
521 case GL_TEXTURE_2D:
522 {
523 #if !defined(GL_ES_VERSION_2_0)
524 if (aParams->GenMode() != Graphic3d_TOTM_MANUAL)
525 {
526 glEnable (GL_TEXTURE_GEN_S);
527 glEnable (GL_TEXTURE_GEN_T);
528 }
529 #endif
530 glEnable (GL_TEXTURE_2D);
531 break;
532 }
533 default: break;
534 }
535
536#if !defined(GL_ES_VERSION_2_0)
537 glMatrixMode (aMatrixMode); // turn back active matrix
538#endif
539 theTexture->SetParams (aParams);
540}
541
542// =======================================================================
543// function : EnableTexture
544// purpose :
545// =======================================================================
546Handle(OpenGl_Texture) OpenGl_Workspace::EnableTexture (const Handle(OpenGl_Texture)& theTexture,
547 const Handle(Graphic3d_TextureParams)& theParams)
548{
549 if (theTexture.IsNull() || !theTexture->IsValid())
550 {
551 return DisableTexture();
552 }
553
554 if (myTextureBound == theTexture
555 && (theParams.IsNull() || theParams == theTexture->GetParams()))
556 {
557 // already bound
558 return myTextureBound;
559 }
560
561 Handle(OpenGl_Texture) aPrevTexture = DisableTexture();
562 myTextureBound = theTexture;
563 myTextureBound->Bind (myGlContext);
564 setTextureParams (myTextureBound, theParams);
565
566 return aPrevTexture;
567}
568
569// =======================================================================
570// function : Redraw
571// purpose :
572// =======================================================================
573void OpenGl_Workspace::Redraw (const Graphic3d_CView& theCView,
574 const Aspect_CLayer2d& theCUnderLayer,
575 const Aspect_CLayer2d& theCOverLayer)
576{
577 if (!Activate())
578 {
579 return;
580 }
581
582 ++myFrameCounter;
583 myIsCullingEnabled = theCView.IsCullingEnabled;
584
585 // release pending GL resources
586 Handle(OpenGl_Context) aGlCtx = GetGlContext();
587 aGlCtx->ReleaseDelayed();
588
589 // fetch OpenGl context state
590 aGlCtx->FetchState();
591
592 Tint toSwap = (aGlCtx->IsRender() && !aGlCtx->caps->buffersNoSwap) ? 1 : 0; // swap buffers
593 GLint aViewPortBack[4];
594 OpenGl_FrameBuffer* aFrameBuffer = (OpenGl_FrameBuffer* )theCView.ptrFBO;
595 if (aFrameBuffer != NULL)
596 {
597 glGetIntegerv (GL_VIEWPORT, aViewPortBack);
598 aFrameBuffer->SetupViewport (aGlCtx);
599 toSwap = 0; // no need to swap buffers
600 }
601
602 myToRedrawGL = Standard_True;
603 if (theCView.RenderParams.Method == Graphic3d_RM_RAYTRACING
604 && myComputeInitStatus != OpenGl_RT_FAIL)
605 {
606 if (UpdateRaytraceGeometry (OpenGl_GUM_CHECK) && myIsRaytraceDataValid)
607 {
608 myToRedrawGL = Standard_False;
609
610 // Only non-raytracable structures should be rendered in OpenGL mode.
611 Handle(OpenGl_RenderFilter) aRenderFilter = GetRenderFilter();
612 myRaytraceFilter->SetPrevRenderFilter (aRenderFilter);
613 SetRenderFilter (myRaytraceFilter);
614
615 Standard_Integer aSizeX = aFrameBuffer != NULL ? aFrameBuffer->GetVPSizeX() : myWidth;
616 Standard_Integer aSizeY = aFrameBuffer != NULL ? aFrameBuffer->GetVPSizeY() : myHeight;
617
618 if (myOpenGlFBO.IsNull())
619 {
620 myOpenGlFBO = new OpenGl_FrameBuffer();
621 }
622 if (myOpenGlFBO->GetVPSizeX() != aSizeX
623 || myOpenGlFBO->GetVPSizeY() != aSizeY)
624 {
625 myOpenGlFBO->Init (aGlCtx, aSizeX, aSizeY);
626 }
627
628 // OverLayer and UnderLayer shouldn't be drawn by OpenGL.
629 // They will be drawn during ray-tracing.
630 Aspect_CLayer2d anEmptyCLayer;
631 anEmptyCLayer.ptrLayer = NULL;
632
633 myOpenGlFBO->BindBuffer (aGlCtx);
634 redraw1 (theCView, anEmptyCLayer, anEmptyCLayer, 0);
635 myOpenGlFBO->UnbindBuffer (aGlCtx);
636
637 const Standard_Boolean isImmediate = !myView->ImmediateStructures().IsEmpty();
638 Raytrace (theCView, aSizeX, aSizeY, isImmediate ? 0 : toSwap,
639 theCOverLayer, theCUnderLayer, aFrameBuffer);
640
641 if (isImmediate)
642 {
643 RedrawImmediate (theCView, theCUnderLayer, theCOverLayer, Standard_True);
644 }
645
646 SetRenderFilter (aRenderFilter);
647
648 theCView.WasRedrawnGL = Standard_False;
649 }
650 }
651
652 if (myToRedrawGL)
653 {
654 // draw entire frame using normal OpenGL pipeline
655 if (aFrameBuffer != NULL)
656 {
657 aFrameBuffer->BindBuffer (aGlCtx);
658 }
659
660 const Standard_Boolean isImmediate = !myView->ImmediateStructures().IsEmpty();
661 redraw1 (theCView, theCUnderLayer, theCOverLayer, isImmediate ? 0 : toSwap);
662 if (isImmediate)
663 {
664 RedrawImmediate (theCView, theCUnderLayer, theCOverLayer, Standard_True);
665 }
666
667 theCView.WasRedrawnGL = Standard_True;
668 }
669
670 if (aFrameBuffer != NULL)
671 {
672 aFrameBuffer->UnbindBuffer (aGlCtx);
673 // move back original viewport
674 glViewport (aViewPortBack[0], aViewPortBack[1], aViewPortBack[2], aViewPortBack[3]);
675 }
676
677#if defined(_WIN32) && defined(HAVE_VIDEOCAPTURE)
678 if (OpenGl_AVIWriter_AllowWriting (theCView.DefWindow.XWindow))
679 {
680 GLint params[4];
681 glGetIntegerv (GL_VIEWPORT, params);
682 int nWidth = params[2] & ~0x7;
683 int nHeight = params[3] & ~0x7;
684
685 const int nBitsPerPixel = 24;
686 GLubyte* aDumpData = new GLubyte[nWidth * nHeight * nBitsPerPixel / 8];
687
688 glPixelStorei (GL_PACK_ALIGNMENT, 1);
689 glReadPixels (0, 0, nWidth, nHeight, GL_BGR_EXT, GL_UNSIGNED_BYTE, aDumpData);
690 OpenGl_AVIWriter_AVIWriter (aDumpData, nWidth, nHeight, nBitsPerPixel);
691 delete[] aDumpData;
692 }
693#endif
694
695 // reset render mode state
696 aGlCtx->FetchState();
697}
698
699// =======================================================================
700// function : redraw1
701// purpose :
702// =======================================================================
703void OpenGl_Workspace::redraw1 (const Graphic3d_CView& theCView,
704 const Aspect_CLayer2d& theCUnderLayer,
705 const Aspect_CLayer2d& theCOverLayer,
706 const int theToSwap)
707{
708 if (myView.IsNull())
709 {
710 return;
711 }
712
713 // request reset of material
714 NamedStatus |= OPENGL_NS_RESMAT;
715
716 GLbitfield toClear = GL_COLOR_BUFFER_BIT;
717 if (myUseZBuffer)
718 {
719 glDepthFunc (GL_LEQUAL);
720 glDepthMask (GL_TRUE);
721 if (myUseDepthTest)
722 {
723 glEnable (GL_DEPTH_TEST);
724 }
725 else
726 {
727 glDisable (GL_DEPTH_TEST);
728 }
729
730 #if !defined(GL_ES_VERSION_2_0)
731 glClearDepth (1.0);
732 #else
733 glClearDepthf (1.0f);
734 #endif
735 toClear |= GL_DEPTH_BUFFER_BIT;
736 }
737 else
738 {
739 glDisable (GL_DEPTH_TEST);
740 }
741
742 if (!ToRedrawGL())
743 {
744 // set background to black
745 glClearColor (0.0f, 0.0f, 0.0f, 0.0f);
746 toClear |= GL_DEPTH_BUFFER_BIT; //
747 }
748 else
749 {
750 if (NamedStatus & OPENGL_NS_WHITEBACK)
751 {
752 // set background to white
753 glClearColor (1.0f, 1.0f, 1.0f, 1.0f);
754 toClear |= GL_DEPTH_BUFFER_BIT;
755 }
756 else
757 {
758 glClearColor (myBgColor.rgb[0], myBgColor.rgb[1], myBgColor.rgb[2], 0.0f);
759 }
760 }
761 glClear (toClear);
762
763 Handle(OpenGl_Workspace) aWS (this);
764 myView->Render (myPrintContext, aWS, theCView, theCUnderLayer, theCOverLayer);
765
766 // swap the buffers
767 if (theToSwap)
768 {
769 GetGlContext()->SwapBuffers();
770 myBackBufferRestored = Standard_False;
771 myIsImmediateDrawn = Standard_False;
772 }
773 else
774 {
775 glFlush(); //
776 myBackBufferRestored = Standard_True;//
777 myIsImmediateDrawn = Standard_False;//
778 }
779}
780
781// =======================================================================
782// function : copyBackToFront
783// purpose :
784// =======================================================================
785void OpenGl_Workspace::copyBackToFront()
786{
787#if !defined(GL_ES_VERSION_2_0)
788 glMatrixMode (GL_PROJECTION);
789 glPushMatrix();
790 glLoadIdentity();
791 gluOrtho2D (0.0, (GLdouble )myWidth, 0.0, (GLdouble )myHeight);
792
793 glMatrixMode (GL_MODELVIEW);
794 glPushMatrix();
795 glLoadIdentity();
796
797 DisableFeatures();
798
799 glDrawBuffer (GL_FRONT);
800 glReadBuffer (GL_BACK);
801
802 glRasterPos2i (0, 0);
803 glCopyPixels (0, 0, myWidth + 1, myHeight + 1, GL_COLOR);
804
805 EnableFeatures();
806
807 glMatrixMode (GL_PROJECTION);
808 glPopMatrix();
809 glMatrixMode (GL_MODELVIEW);
810 glPopMatrix();
811
812 glDrawBuffer (GL_BACK);
813
814#endif
815 myIsImmediateDrawn = Standard_False;
816}
817
818// =======================================================================
819// function : DisplayCallback
820// purpose :
821// =======================================================================
822void OpenGl_Workspace::DisplayCallback (const Graphic3d_CView& theCView,
823 Standard_Integer theReason)
824{
825 if (theCView.GDisplayCB == NULL)
826 {
827 return;
828 }
829
830 Aspect_GraphicCallbackStruct aCallData;
831 aCallData.reason = theReason;
832 aCallData.glContext = GetGlContext();
833 aCallData.wsID = theCView.WsId;
834 aCallData.viewID = theCView.ViewId;
835 theCView.GDisplayCB (theCView.DefWindow.XWindow, theCView.GClientData, &aCallData);
836}
837
838// =======================================================================
839// function : RedrawImmediate
840// purpose :
841// =======================================================================
842void OpenGl_Workspace::RedrawImmediate (const Graphic3d_CView& theCView,
843 const Aspect_CLayer2d& theCUnderLayer,
844 const Aspect_CLayer2d& theCOverLayer,
845 const Standard_Boolean theToForce)
846{
847 if (!Activate())
848 {
849 return;
850 }
851
852 GLboolean isDoubleBuffer = GL_FALSE;
853#if !defined(GL_ES_VERSION_2_0)
854 glGetBooleanv (GL_DOUBLEBUFFER, &isDoubleBuffer);
855#endif
856 if (myView->ImmediateStructures().IsEmpty())
857 {
858 if (theToForce
859 || !myIsImmediateDrawn)
860 {
861 myIsImmediateDrawn = Standard_False;
862 return;
863 }
864
865 if (myBackBufferRestored
866 && isDoubleBuffer)
867 {
868 copyBackToFront();
869 glFlush();
870 }
871 else
872 {
873 Redraw (theCView, theCUnderLayer, theCOverLayer);
874 }
875 return;
876 }
877
878 if (isDoubleBuffer && myTransientDrawToFront)
879 {
880 if (!myBackBufferRestored)
881 {
882 Redraw (theCView, theCUnderLayer, theCOverLayer);
883 return;
884 }
885 copyBackToFront();
886 MakeFrontBufCurrent();
887 }
888 else
889 {
890 myBackBufferRestored = Standard_False;
891 }
892 myIsImmediateDrawn = Standard_True;
893
894 NamedStatus |= OPENGL_NS_IMMEDIATE;
895 ///glDisable (GL_LIGHTING);
896 glDisable (GL_DEPTH_TEST);
897
898 Handle(OpenGl_Workspace) aWS (this);
899 for (OpenGl_SequenceOfStructure::Iterator anIter (myView->ImmediateStructures());
900 anIter.More(); anIter.Next())
901 {
902 const OpenGl_Structure* aStructure = anIter.Value();
903 aStructure->Render (aWS);
904 }
905
906 NamedStatus &= ~OPENGL_NS_IMMEDIATE;
907
908 if (isDoubleBuffer && myTransientDrawToFront)
909 {
910 glFlush();
911 MakeBackBufCurrent();
912 }
913}
Open CASCADE Technology repository